copperas

noun
cop·per·as | \ˈkä-p(ə-)rəs \

Definition of copperas 

First Known Use of copperas

14th century, in the meaning defined above

History and Etymology for copperas

Middle English coperas, from Anglo-French coperose, from Medieval Latin cuprosa, probably from aqua cuprosa, literally, copper water, from Late Latin cuprum

Keep scrolling for more

Learn More about copperas

Statistics for copperas

Look-up Popularity

Time Traveler for copperas

The first known use of copperas was in the 14th century

See more words from the same century

Keep scrolling for more

More Definitions for copperas

copperas

noun
cop·per·as | \ˈkäp-(ə-)rəs \

Medical Definition of copperas 

: a green hydrated ferrous sulfate FeSO4·7H2O used especially in making inks and pigments used especially of commercial grades not to be used internally

Comments on copperas

What made you want to look up copperas? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to reject or criticize sharply

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!